Group calls in a mobile radio system
US7649893B2 · kind B2 · utility
1Cited by
6References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 4, 2003 |
| Grant date | Jan 19, 2010 |
| Priority date | — |
| Expiry date | Apr 12, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W28/18
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of arbitrating group calls in a digital mobile radio system without need of a central component. In general terms the base station that are serving mobile units in a call each announce the nature of the signals that they are receiving. The stations then each compare the signals and decide which signal will be broadcast to the mobile units. The signals are preferably transmitted between base stations via a packet network using IP multicast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.